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Perkadox® GB-50X is a free-flowing 50% peroxide formulation on a phthalate-free carrier for curing unsaturated polyester resins and (meth)acrylic resins at ambient and elevated temperatures. Provides excellent solubility in standard thermoset curing applications.
Description
Perkadox® GB-50X is a free-flowing 50% dibenzoyl peroxide (BPO) formulation on a phthalate-free carrier from Nouryon, used for curing unsaturated polyester resins and (meth)acrylic resins at ambient and elevated temperatures. It's a non-caking, fine, granular powder with excellent free-flowing properties, dispersing and dissolving quickly in these resin systems.Below 80°C, Perkadox® GB-50X requires an aromatic tertiary amine accelerator to cure; above 80°C, no accelerator is needed. Because it doesn't dissolve completely clear in the resin system, it isn't suited to cured parts requiring a high degree of transparency — Nouryon recommends Perkadox® GB-50L for those applications instead.
| CAS Number | Active oxygen content peroxide |
| 94-36-0 | 3.3% |
| Appearance | EINECS/ELINCS |
| White free flowing powder | No.202-327-6 |
| TSCA status | |
| Not listed on inventory | |
| Characteristics | |
| Bulk density | 640 kg/m³ |
| Application | |
| Perkadox® GB-50X is used to cure unsaturated polyester resins and (meth)acrylic resins at ambient and elevated temperatures, with an aromatic tertiary amine accelerator for temperatures up to 80°C. | |
| Thermal Stability | |
| As an organic peroxide, Perkadox® GB-50X is thermally unstable and can undergo self-accelerating decomposition above a certain temperature threshold. Its Self-Accelerating Decomposition Temperature (SADT), determined by the Heat Accumulation Storage Test per UN transport testing criteria, is 55°C. | |
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